Mine is the "The Merv Griffin Show." It's basically each character in a nutshell- Kramer's eccentricities, Newman's dickishness, Jerry's give-no-fucks attitude, Elaine's general annoyance with people, and George's horrible luck compounded with his horrible decision making.

I came to say this episode, too! It's one of the more meta episodes. I always lose it at the moment when Kramer says "we'll take a break." No one else quite knows how to play along with him at first. "Excuse me. We're talking over here."

That is also in my top 5 or something like that :P. It just annoys when Newman is in the episode. I understand that he is supposed to be a dick, but I don't really like him, he doesn't seem natural to the show to me somehow.